Which scenario is an example of Circuit Training?

The scenario that exemplifies Circuit Training involves completing a set of push-ups, followed by squats, and finishing with jumping jacks. This format is characteristic of circuit training as it consists of performing different exercises in a sequence without significant breaks in between.

Circuit training typically aims to enhance cardiovascular fitness and muscular strength by integrating varied exercises that target multiple muscle groups and energy systems. In this instance, the individual transitions from one exercise to another (push-ups to squats to jumping jacks) efficiently, utilizing different movements that engage various body parts and maintain an elevated heart rate.

The other scenarios do not reflect the principles of circuit training. A warm-up, while important, does not involve the high-intensity, varied exercises typical of circuit training. Working out for an extended period of 2 hours may imply prolonged activity but lacks the structured, varied nature inherent in circuit training. Finally, performing only weight lifting focuses on strength without incorporating the aerobic aspect or exercise variety found in circuit training.